Package org.bouncycastle.crypto.params

Examples of org.bouncycastle.crypto.params.KeyParameter

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        /*
         * ISAAC encryption and decryption is completely
         * symmetrical, so the 'forEncryption' is
         * irrelevant.
         */
        KeyParameter p = (KeyParameter)params;
        setKey(p.getKey());
       
        return;
    }
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        int     l = (dkLen + hLen - 1) / hLen;
        byte[]  iBuf = new byte[4];
        byte[]  outBytes = new byte[l * hLen];
        int     outPos = 0;

        CipherParameters param = new KeyParameter(password);

        hMac.init(param);

        for (int i = 1; i <= l; i++)
        {
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    {
        keySize = keySize / 8;

        byte[]  dKey = generateDerivedKey(keySize);

        return new KeyParameter(dKey, 0, keySize);
    }
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        keySize = keySize / 8;
        ivSize = ivSize / 8;

        byte[]  dKey = generateDerivedKey(keySize + ivSize);

        return new ParametersWithIV(new KeyParameter(dKey, 0, keySize), dKey, keySize, ivSize);
    }
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    {
        if (!(params instanceof KeyParameter))
        {
            throw new IllegalArgumentException("'params' must be an instance of KeyParameter");
        }
        KeyParameter keyParameter = (KeyParameter)params;
        byte[] key = keyParameter.getKey();
        if (key.length != 16)
        {
            throw new IllegalArgumentException("'params' must be a 128-bit key");
        }
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            throw new IllegalArgumentException(
                "VMPC init parameters must include an IV");
        }

        ParametersWithIV ivParams = (ParametersWithIV) params;
        KeyParameter key = (KeyParameter) ivParams.getParameters();

        if (!(ivParams.getParameters() instanceof KeyParameter))
        {
            throw new IllegalArgumentException(
                "VMPC init parameters must include a key");
        }

        this.workingIV = ivParams.getIV();

        if (workingIV == null || workingIV.length < 1 || workingIV.length > 768)
        {
            throw new IllegalArgumentException("VMPC requires 1 to 768 bytes of IV");
        }

        this.workingKey = key.getKey();

        initKey(this.workingKey, this.workingIV);
    }
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        HKDFParameters params = (HKDFParameters)param;
        if (params.skipExtract())
        {
            // use IKM directly as PRK
            hMacHash.init(new KeyParameter(params.getIKM()));
        }
        else
        {
            hMacHash.init(extract(params.getSalt(), params.getIKM()));
        }
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     * @param ikm  the input keying material
     * @return the PRK as KeyParameter
     */
    private KeyParameter extract(byte[] salt, byte[] ikm)
    {
        hMacHash.init(new KeyParameter(ikm));
        if (salt == null)
        {
            // TODO check if hashLen is indeed same as HMAC size
            hMacHash.init(new KeyParameter(new byte[hashLen]));
        }
        else
        {
            hMacHash.init(new KeyParameter(salt));
        }

        hMacHash.update(ikm, 0, ikm.length);

        byte[] prk = new byte[hashLen];
        hMacHash.doFinal(prk, 0);
        return new KeyParameter(prk);
    }
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    }

    //Encrypt function, ECB mode
    private void E(byte[] key, byte[] s, int sOff, byte[] in, int inOff)
    {
        cipher.init(true, new KeyParameter(key));
       
        cipher.processBlock(in, inOff, s, sOff);
    }
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    {
        keySize = keySize / 8;

        byte[]  dKey = generateDerivedKey(KEY_MATERIAL, keySize);

        return new KeyParameter(dKey, 0, keySize);
    }
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